Numerical simulations of the blood flow through vertebral arteries
Numerical simulations of the blood flow through vertebral arteries
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DOI：
10.1016/j.jbiomech.2009.09.026
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发表时间：
2010-01-19
影响因子：
2.4
通讯作者：
Obidowski, Damian
中科院分区：
文献类型：
--
作者：
Jozwik, Krzysztof;Obidowski, Damian
椎动脉是两条动脉，其结构和在人体中的位置导致了特殊的流动条件的发展。对于某些动脉，在超声诊断期间可以观察到左动脉和右动脉的当前速率之间存在显着差异。通常这种差异的原因与检测到较小流速的动脉病理有关。已经对 25 种动脉直径情况下通过选定类型的椎动脉几何形状的血流进行了模拟。本实验的主要目的是可视化基底动脉起源处椎动脉交界处区域的血流。检查人体循环系统的这一部分极其困难，因此数值实验可能有助于理解当两条相对较大的动脉连接在一起形成一根血管时发生的现象。获得的结果表明，特定动脉的个体结构和直径可以对其血流产生影响，并影响椎动脉流速之间的显着差异。在研究中假设模型动脉绝对正常，没有任何病理。数值实验采用非牛顿血液模型。 (C) 2009 Elsevier Ltd. 保留所有权利。
Vertebral arteries are two arteries whose structure and location in human body result in development of special flow conditions. For some of the arteries, one can observe a significant difference between now rates in the left and the right arteries during ultrasonography diagnosis. Usually the reason of such a difference was connected with pathology of the artery in which a smaller flow rate was detected. Simulations of the flow through the selected type of the vertebral artery geometry for twenty five cases of artery diameters have been carried out. The main aim of the presented experiment was to visualize the flow in the region of vertebral arteries junction in the origin of the basilar artery. it is extremely difficult to examine this part of human circulation system, thus numerical experiments may be helpful in understanding the phenomena occurring when two relatively large arteries join together to form one vessel. The obtained results have shown that an individual configuration and diameters of particular arteries can exert an influence on the flow in them and affect a significant difference between flow rates for vertebral arteries. It has been assumed in the investigations that modelled arteries were absolutely normal, without any pathology. In the numerical experiment, the non-Newtonian model of blood was employed. (C) 2009 Elsevier Ltd. All rights reserved.